Where did you get H3N 38 BS? Could be interesting when we have to play league matches in cold conditions.
I don't know how the 38 BS will react to booster but 38 OS did not become to soft or mushy when using two layers.
37 OS easily becomes to soft and mushy when boosted. H8-80: depends on the batch. Some were good, some way too soft but this should not be an issue anymore with the availability of provincial and national grades + the Nittaku versions.
p.s. H3N BS is highly addictive. Chances are quite high that you are not going back to OS